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Intraoperative Transcranial Motor-Evoked Potential Monitoring of the Facial Nerve during Cerebellopontine Angle Tumor Resection

Cosetti, Maura K; Xu, Ming; Rivera, Andrew; Jethanamest, Daniel; Kuhn, Maggie A; Beric, Aleksandar; Golfinos, John G; Roland, J Thomas
Objective To determine whether transcranial motor-evoked potential (TCMEP) monitoring of the facial nerve (FN) during cerebellopontine angle (CPA) tumor resection can predict both immediate and long-term postoperative FN function. Design Retrospective review. Setting Tertiary referral center. Main Outcome Measures DeltaTCMEP (final-initial) and immediate and long-term facial nerve function using House Brackmann (HB) rating scale. Results Intraoperative TCMEP data and immediate and follow-up FN outcome are reported for 52 patients undergoing CPA tumor resection. Patients with unsatisfactory facial outcome (HB >2) at follow-up had an average deltaTCMEP of 57 V, whereas those with HB I or II had a mean deltaTCMEP of 0.04 V (t = -2.6, p < 0.05.) Intraoperative deltaTCMEP did not differ significantly between groups with satisfactory (HB I, II) and unsatisfactory (HB > 2) facial function in the immediate postoperative period. Conclusion Intraoperative TCMEP of the facial nerve can be a valuable adjunct to conventional facial nerve electromyography during resection of tumors at the CPA. Intraoperative deltaTCMEP >57 V may be worrisome for long-term recovery of satisfactory facial nerve function.
PMCID:3578638
PMID: 24083121
ISSN: 2193-634x
CID: 563692

Long-term changes in motor function and stimulation parameters in patients with deep brain stimulation of the subthalamic nucleus for Parkinson's disease [Meeting Abstract]

Parker, EC; Beric, A; Sterio, D; Drafta, C; Xu, M; Taverna, PA; Kelly, PJ
ISI:000242616800032
ISSN: 1011-6125
CID: 70324

The effects of acupuncture on human neurophysiology [Meeting Abstract]

Xu, Ming; Zhou, Henry H.; Turndorf, Herman
BIOSIS:PREV199900091920
ISSN: 0190-5295
CID: 92621